NetNewsWire/Shared/Extensions/URL-Extensions.swift

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//
// URL-Extensions.swift
// NetNewsWire
//
// Created by Stuart Breckenridge on 03/05/2020.
// Copyright © 2020 Ranchero Software. All rights reserved.
//
import Foundation
extension URL {
/// Extracts email address from a `URL` with a `mailto` scheme, otherwise `nil`.
var emailAddress: String? {
scheme == "mailto" ? URLComponents(url: self, resolvingAgainstBaseURL: false)?.path : nil
}
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/// Percent encoded `mailto` URL for use with `canOpenUrl`. If the URL doesn't contain the `mailto` scheme, this is `nil`.
var percentEncodedEmailAddress: URL? {
scheme == "mailto" ? self.string.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)?.url : nil
}
/// URL pointing to current app version release notes.
static var releaseNotes: URL {
let appVersion = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String ?? ""
var gitHub = "https://github.com/Ranchero-Software/NetNewsWire/releases/tag/"
#if os(macOS)
gitHub += "mac-\(String(describing: appVersion))"
return URL(string: gitHub)!
#else
gitHub += "ios-\(String(describing: appVersion))"
return URL(string: gitHub)!
#endif
}
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func valueFor(_ parameter: String) -> String? {
guard let components = URLComponents(url: self, resolvingAgainstBaseURL: false),
let queryItems = components.queryItems,
let value = queryItems.first(where: { $0.name == parameter })?.value else {
return nil
}
return value
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}
}